<template>
    <div class="goodsinfo-contain">
        <transition
            @before-enter="beforeEnter"
            @enter="enter"
            @after-enter="afterEnter">
            <div class="ball" v-show="ballFlag" ref="ball"></div>
        </transition>
        <!-- 商品轮播图区域 -->
        <div class="mui-card">
			<div class="mui-card-content">
				<div class="mui-card-content-inner">
					<swiper :list="imglist" :isfull="false"></swiper>  
				</div>
			</div>
		</div>
        <!-- 商品购买区域 -->
        <div class="mui-card">
			<div class="mui-card-header">荣耀9i 4GB+64GB 全面屏人脸识别</div>
			<div class="mui-card-content">
				<div class="mui-card-content-inner">
					<p class="price">
                        市场价：<del>￥1399</del>&nbsp;&nbsp;&nbsp;&nbsp;<span class="nowprice">销售价：￥1199</span>
                    </p>
                    <p>购买数量：<numbox @getcount="getSelectedCount"></numbox></p>
                    <p>
                        <mt-button type="primary" size="small">立即购买</mt-button>
                        <mt-button type="danger" size="small" @click="addToShopCar">加入购物车</mt-button>
                    </p>
				</div>
			</div>
		</div>
        <!-- 商品参数区域 -->
        <div class="mui-card">
			<div class="mui-card-header">商品参数</div>
			<div class="mui-card-content">
				<div class="mui-card-content-inner">
					<p>商品货号：29666332337</p>
                    <p>库存情况：54565</p>
                    <p>上架时间：2018.05.12</p>
				</div>
			</div>
			<div class="mui-card-footer">
                <mt-button type="primary" size="large" plain @click="goDesc(id)">图文介绍</mt-button>
                <mt-button type="danger" size="large" plain @click="goComment(id)">商品评论</mt-button>
            </div>
		</div>
    </div>
</template>

<script>
import swiper from '../subcomponents/swiper.vue'
import numbox from '../subcomponents/goodsinfo_numbox.vue'
export default {
    data(){
        return{
            id: this.$route.params.id, //将路由参数上的Id挂载到data上，方便后期调用
            imglist: [],
            goodsinfo: {},
            ballFlag: false,
            selectedCount: 1
        };
    },
    created(){
        this.getLunbotu();
    },
    methods:{
        getLunbotu(){
            this.$http.get('../../img.json').then(res => {
                console.log(res.body.photoimg)
                this.imglist = res.body.photoimg
            })
        },
        goDesc(id){
            this.$router.push({name:"goodsdesc",params:{id}});
        },
        goComment(id){
            this.$router.push({name:"goodscomment",params:{id}});     
        },
        addToShopCar(){
            this.ballFlag = !this.ballFlag;
            //{id:商品的id，count:购买的数量，price:商品的单价，selected:false}
            var goodsinfo = {id: this.id, count: this.selectedCount, price: 1199, selected: true};
            this.$store.commit('addToCar',goodsinfo);
        },
        beforeEnter(el){
            el.style.transform = "translate(0,0)";
        },
        enter(el,done){
            el.offsetWidth;

            //获取小球在页面中的位置
            const ballPosition = this.$refs.ball.getBoundingClientRect();
            //获取购物车在页面中的位置
            const badgePositon = document.getElementById("badge").getBoundingClientRect();
            const xDist = badgePositon.left - ballPosition.left;
            const yDist = badgePositon.top - ballPosition.top;

            el.style.transform = 'translate(${xDist}px,${yDist}px)';
            el.style.transition = "all 0.5s cubic-bezier(.4,-0.3,1,.68)";
            done();
        },
        afterEnter(el){
            this.ballFlag = !this.ballFlag;
        },
        getSelectedCount(count){
            this.SelectedCount = count;
            console.log('父组件拿到的数量值为：'+this.selectedCount);
        }
    },
    components: {
       swiper,
       numbox
   }
}
</script>

<style lang="scss" scoped>
.goodsinfo-contain{
    background-color: #eee;
    overflow: hidden;

    .nowprice{
        color:red;
        font-size: 16px;
        font-weight: bold;
    }
    .mui-card-footer{
        display: block;
        button{
            margin: 15px 0;
        }
    }
    .ball{
        width: 15px;
        height: 15px;
        border-radius: 50%;
        background:red;
        position: absolute;
        z-index: 99;
        top: 390px;
        left: 146px;
    }
}
</style>
